Factors controlling N_2O and CH_4 fluxes in mixed broad-leaved/Korean pine forest of Changbai Mountain, China

作     者：徐慧 陈冠雄 黄国宏 韩士杰 张秀君 

作者机构：Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110015 P.R. China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：1999年第10卷第4期

页      面：214-218页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：中国科学院资助项目 

主　　题：Broad-leaved/Korean pine forest N_2O CH_4 Flux Environmental factors 

摘      要：Using the closed chamber technique, the in situ measurements of N2O and CH4 fluxes was conducted in a broad-leaved Korean pine mixed forest ecosystem in Changbai Mountain, China. from June 1994 to october 1995. The relationships between fluxes (N2O and CH4) and some major environmental factors (temperature, soil water content and soil availabIe nitrogen) were studied. A significant positive correlation between Nzo emission and air/soil temperature was observed, but no significant correIation was found between N2O emission and soil water content (SWC). This result showed that temperature was an important controlling factor of N2O flux. There was a significant correlation between CH4 uptake and SWC, but no significant correlation was found between CH4 uptake and temperature. This suggested SWC was an important factor controlling CH4 uptake. The very significant negative correlation between logarithmic N2O flux and soil nitrate concentration, significant negative correlation between CH4 flux and soil ammonium content were also found.